Class 318/680 - Magnetic servoamplifiers

Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which the particular servoamplifier is
No. of patents: 3
Last issue date: 10/12/2004

Number	Title	Issue Date
6803738	Magnetic actuation and positioning Magnetic forces are used as a controlled actuation mechanism to move and position objects of interest. In one embodiment, a first spherical surface has at least one magnetic positioner attached. A second spherical surface is positioned to move relative to the first ...	10/12/2004
5825983	Tactile feedback device for remote control robot using repulsive force of magnet An improved tactile feedback device for a remote control robot using a repulsive force of a magnet, which is capable of achieving a more accurate operation and productive work of the robot by transmitting the tactile information of a work object positione...	10/20/1998
4272713	Switching transconductance amplifier for inductive loads A switching current amplifier for stepping motors utilizing a square hysteresis loop transformer to measure the motor winding load current directly, to determine the high and low switching points in reference to the position command signal, to compare the...	06/09/1981

PatentStorm